Activity management "Final mark " is not calculated, when there is a "must pass" activity

I'm using activity management, and need to implement the following case:

the course has different activities and one of them which is the "Final Exam" is a must-pass activity, so if the student failed in the final exam, he will fail in the whole course even if his total mark is above the whole course passing grade.

when I enabled "must-pass" in the activity registry for the final exam, the final grade is not calculated and remained null. is this a normal behavior in PeopleSoft?

I was expecting that the mark should be calculated and the grade to be set to "F"